Heaton



(No Model.)

A. G. 8: G. V. PINPOLD. APPARATUS FOR BNLARGING 0R REDUCING FINGERRINGS.

Patented Jul Fla? mm TATES ATENT @rrrcn.

ARTHUR GOUGH PINFOLD AND GEO RGE VALENTINE PINFOLD, OF CLECK- HEATON,ENGLAND.

APPARATUS FOR ENLARGING OR REDUCING FINGER-RINGS.

SPECIFICATION forming part of Letters Patent No. 542.350, dated July 9,1895. Application filed February 26, 1895- Serial No. 539,794- (Nomodel.) Patentedin England February 6, 1893, N01 9 To all whom it mayconcern:

Be it known that we, ARTHUR GOUGH PIN- FOLD and GEORGE VALENTINEPINFOLD, subjects of the Queen of England, and residing at Oleckheaton,England, have invented certain Improvements in Apparatus for Enlargingor Reducing Finger-Rings and other Annular or Circular Articles, (forwhich we have obtained Letters Patentin England, No. 2,595,

dated February 6, 1893,) of which the following is a specification.

This invention relates to improvements in on the broken line to a,Fig. 1. Figs. 4 to are views of detail, hereinafter referred to.

. The bed A of the apparatus has a standard A cast uponit, in which thevertical cylindrical guide or barrel A is bored to receive the ram B,fitted therein. centric hole B bored in the top,in which the nut B isfixed, and this nut fits the screw 0, which may be rotated by thehand-wheel but is confined longitudinally by its collar 0 between theshoulder A in the cylindrical guide and the cap A upon the top. The ramB is prevented from rotation by the screwpin A fixed in A engaging thekeyway B out along the ram, so that said ram may be raised or lowered byturning the screw.

A rotary die or bolster block D (aseparate plan view of which is shownin Fig. 4) is mounted on the bed and is confined in position by itscenter pin D fitting a hole A in the bed-plate, and the pin A fixed inthebed entering one of the holes Didrilled in the block D. A hole A'",the pin Aflandthe holes D are formed in such a relative position thatwhen the pin A is in one of the holes D one of the holes d or d? or oneof the holes e, 6 or e are beneath the center of the ram. A series oftaper punches or dies E to E (mounted for-convenience on the verticalstud A secured to the back of thebed) are employed in The ram has acon-V conjunction with the die-block, any of which may be mounted uponthe carrier B projecting from the bottom of the ram B, and be re tainedthereon by the spring. B

The holes at or d are for reducing rings and other similar annularobjects.

In use the ring R is placed .in the top of the hole, as shown insectional view, Fig. 7, and a punch of the required size carried by the601 ram is brought down upon it to force it into the hole the requireddistance. Wide rings may be reversed and the operation repeated, so asto make both sides equal.

The holes e, c and e are employed in con- 6 5 junction with the dies toenlarge rings, in which case the ring R is placed over a suitable-sizedhole, as shown in the sectional iew, Fig. 8, and one or more of thepunches more or less forced through it. 7c

The series of enlarging-holes may be extended from c to e by means ofthe die-plates D and D perforated with holes graduated in 'size. Theplate D is provided with a pin D projecting on both sides, and the underside is adapted to pass into the hole D drilled through the block toretain it in conjunction with the center pin D in proper relativeposition to said block and enable it to be rotated therewith. The plateD is made the same size as D but the holes are smaller, and it isretained in position by the center pin D and its hole D engaging the topof the pin D The holes e to e are preferably made not quite cylindrical,but are a little wider at the 8 bottom than the top.

We claim 1. In a device of the character described, the combination witha support, of a vertically-movable ram adapted to carry a punch at itslower end, and a rotatable die-block provided with a series of graduatedopenings adapted to be brought into position beneath the ram andpunch,said block having a series of perforations adapted to align with asocket in the support, one or more die plates rotatably mounted over thedie-block and provided with a series of graduated openings, said dieplate or plates being provided also with perforations adapted to alignwith the perfora- 10c tions in the die-block, and pins adapted to bearranged within the aligned perforations of the die-block,plate,orplates and support, for the purpose specified.

2. In a device of the character described, the combination with asupport having a vertical opening, of a rain arranged in said opening, apunch'carrier 011 the lower end of the ram and adapted to receive apunch, a nut carried by the ram and havinga threaded opening, said ramhaving a lateral vertical keyway, a screw engaging said threadedopening, a hand wheel carried by said screw, a screw or stud engagingthe keyway, a die block rotatably mounted on the support and havingaseries of graduated openings adapted Witnesses:

DAVID NORVELL, CHARLES BONFIELD.

